/**
 * Creates the base structure of Tree.
 * @member Ext.tree.Panel
 */
@mixin extjs-tree {

  // Tree tables must assume either full width of the View element, or, when necessary, must overflow
  // They must not shrink wrap the width and only be as wide as their widest node's content.
  .#{$prefix}autowidth-table table.#{$prefix}grid-table {
    table-layout: auto;
    width: auto !important;
  }

  .#{$prefix}tree-no-lines .#{$prefix}tree-elbow {
    background-color: transparent;
  }

  .#{$prefix}tree-no-lines .#{$prefix}tree-elbow-end {
    background-color: transparent;
  }

  .#{$prefix}tree-no-lines .#{$prefix}tree-elbow-line {
    background-color: transparent;
  }

  //arrows
  .#{$prefix}tree-arrows .#{$prefix}tree-elbow-plus {
    background: transparent no-repeat 0 0;
  }

  .#{$prefix}tree-arrows .#{$prefix}tree-elbow-end-plus {
    background: transparent no-repeat 0 0;
  }

  .#{$prefix}tree-arrows .#{$prefix}tree-elbow-end-minus {
    background: transparent no-repeat -16px 0;
  }

  .#{$prefix}tree-arrows .#{$prefix}tree-elbow-minus {
    background: transparent no-repeat -16px 0;
  }

  .#{$prefix}tree-arrows .#{$prefix}tree-elbow {
    background-color: transparent !important;
  }

  .#{$prefix}tree-arrows .#{$prefix}tree-elbow-end {
    background-color: transparent !important;
  }

  .#{$prefix}tree-arrows .#{$prefix}tree-elbow-line {
    background-color: transparent !important;
  }

  //elbows
  .#{$prefix}tree-arrows .#{$prefix}tree-expander-over .#{$prefix}tree-elbow-plus,
  .#{$prefix}tree-arrows .#{$prefix}tree-expander-over .#{$prefix}tree-elbow-end-plus {
    background-position: -32px 0;
  }

  .#{$prefix}tree-arrows .#{$prefix}tree-expander-over .#{$prefix}tree-elbow-minus,
  .#{$prefix}tree-arrows .#{$prefix}tree-expander-over .#{$prefix}tree-elbow-end-minus {
    background-position: -48px 0;
  }

  .#{$prefix}tree-arrows .#{$prefix}grid-tree-node-expanded .#{$prefix}tree-elbow-plus,
  .#{$prefix}tree-arrows .#{$prefix}grid-tree-node-expanded .#{$prefix}tree-elbow-end-plus {
    background-position: -16px 0;
  }

  .#{$prefix}tree-arrows .#{$prefix}grid-tree-node-expanded .#{$prefix}tree-expander-over .#{$prefix}tree-elbow-plus,
  .#{$prefix}tree-arrows .#{$prefix}grid-tree-node-expanded .#{$prefix}tree-expander-over .#{$prefix}tree-elbow-end-plus {
    background-position: -48px 0;
  }

  .#{$prefix}tree-elbow-plus,
  .#{$prefix}tree-elbow-minus,
  .#{$prefix}tree-elbow-end-plus,
  .#{$prefix}tree-elbow-end-minus {
    cursor: pointer;
  }

  //elbows
  .#{$prefix}tree-lines {
    .#{$prefix}tree-elbow {
      background-image: theme-background-image($theme-name, 'tree/elbow.gif');
    }

    .#{$prefix}tree-elbow-end {
      background-image: theme-background-image($theme-name, 'tree/elbow-end.gif');
    }

    .#{$prefix}tree-elbow-plus {
      background-image: theme-background-image($theme-name, 'tree/elbow-plus.gif');
    }

    .#{$prefix}tree-elbow-end-plus {
      background-image: theme-background-image($theme-name, 'tree/elbow-end-plus.gif');
    }

    .#{$prefix}grid-tree-node-expanded .#{$prefix}tree-elbow-plus {
      background-image: theme-background-image($theme-name, 'tree/elbow-minus.gif');
    }

    .#{$prefix}grid-tree-node-expanded .#{$prefix}tree-elbow-end-plus {
      background-image: theme-background-image($theme-name, 'tree/elbow-end-minus.gif');
    }

    .#{$prefix}tree-elbow-line {
      background-image: theme-background-image($theme-name, 'tree/elbow-line.gif');
    }
  }

  .#{$prefix}tree-no-lines {
    .#{$prefix}tree-elbow-plus,
    .#{$prefix}tree-elbow-end-plus {
      background-image: theme-background-image($theme-name, 'tree/elbow-plus-nl.gif');
    }

    .#{$prefix}grid-tree-node-expanded .#{$prefix}tree-elbow-plus,
    .#{$prefix}grid-tree-node-expanded .#{$prefix}tree-elbow-end-plus {
      background-image: theme-background-image($theme-name, 'tree/elbow-end-minus-nl.gif');
    }
  }

  .#{$prefix}tree-arrows {
    .#{$prefix}tree-elbow-plus,
    .#{$prefix}tree-elbow-minus,
    .#{$prefix}tree-elbow-end-plus,
    .#{$prefix}tree-elbow-end-minus {
      background-image: theme-background-image($theme-name, 'tree/arrows.gif');
    }
  }

  .#{$prefix}tree-icon {
    margin: $tree-icon-margin-top $tree-icon-margin-right 0 0;
  }

  .#{$prefix}grid-with-row-lines .#{$prefix}tree-icon {
    margin-top: $tree-icon-margin-top - 1
  }

  .#{$prefix}tree-elbow,
  .#{$prefix}tree-elbow-end,
  .#{$prefix}tree-elbow-plus,
  .#{$prefix}tree-elbow-end-plus,
  .#{$prefix}tree-elbow-empty,
  .#{$prefix}tree-elbow-line {
    height: $tree-elbow-height;
    width: $tree-elbow-width;
  }

  .#{$prefix}grid-with-row-lines {
    .#{$prefix}tree-elbow,
    .#{$prefix}tree-elbow-end,
    .#{$prefix}tree-elbow-plus,
    .#{$prefix}tree-elbow-end-plus,
    .#{$prefix}tree-elbow-empty,
    .#{$prefix}tree-elbow-line {
      height: $tree-elbow-height - 1;
      background-position: 0 -1px;
    }
  }

  .#{$prefix}tree-icon-leaf {
    width: $tree-elbow-width;
    background-image: theme-background-image($theme-name, 'tree/leaf.gif');
  }

  .#{$prefix}tree-icon-parent {
    width: $tree-elbow-width;
    background-image: theme-background-image($theme-name, 'tree/folder.gif');
  }

  .#{$prefix}grid-tree-node-expanded .#{$prefix}tree-icon-parent {
    background-image: theme-background-image($theme-name, 'tree/folder-open.gif');
  }

  .#{$prefix}grid-rowbody {
    padding: 0;
  }

  .#{$prefix}grid-cell-treecolumn .#{$prefix}grid-cell-inner {
    padding: 0;
    line-height: $tree-elbow-height - 1;
  }

  .#{$prefix}grid-with-row-lines .#{$prefix}grid-cell-treecolumn .#{$prefix}grid-cell-inner {
    line-height: $tree-elbow-height - 3;
  }

  .#{$prefix}tree-panel .#{$prefix}grid-cell-inner {
    cursor: pointer;

    img {
      display: inline-block;
      vertical-align: top;
    }
  }

  @if $include-ie {
    .#{$prefix}ie .#{$prefix}tree-panel {
      .#{$prefix}tree-elbow,
      .#{$prefix}tree-elbow-end,
      .#{$prefix}tree-elbow-plus,
      .#{$prefix}tree-elbow-end-plus,
      .#{$prefix}tree-elbow-empty,
      .#{$prefix}tree-elbow-line {
        // vertical alignment is necessary for IE to show the ellipsis in the right place.
        vertical-align: -6px;
      }
    }
  }

  .#{$prefix}grid-editor-on-text-node {
    .#{$prefix}form-text {
      // specify padding left and padding right individually since we don't want to override padding-bottom (which can vary)
      padding-left: $grid-cell-treecolumn-editor-field-padding-horizontal;
      padding-right: $grid-cell-treecolumn-editor-field-padding-horizontal;
    }
  }
  @if $include-ie {
    .#{$prefix}ie .#{$prefix}grid-editor-on-text-node .#{$prefix}form-text {
      padding-left: $grid-cell-treecolumn-editor-field-padding-horizontal + 1px;
      padding-right: $grid-cell-treecolumn-editor-field-padding-horizontal + 1px;
    }
  }
  @if $include-opera {
    .#{$prefix}opera .#{$prefix}grid-editor-on-text-node .#{$prefix}form-text {
      padding-left: $grid-cell-treecolumn-editor-field-padding-horizontal + 1px;
      padding-right: $grid-cell-treecolumn-editor-field-padding-horizontal + 1px;
    }
  }

  .#{$prefix}tree-checkbox {
    margin: $tree-checkbox-margin-top $tree-checkbox-margin-right 0 0;
    display: inline-block;
    vertical-align: top;

    width: $form-checkbox-size;
    height: $form-checkbox-size;
    background: no-repeat;
    background-image: theme-background-image($theme-name, $form-checkbox-image);

    overflow: hidden;
    padding: 0;
    border: 0;

    &::-moz-focus-inner {
      padding: 0;
      border: 0;
    }
  }

  .#{$prefix}grid-with-row-lines .#{$prefix}tree-checkbox {
    margin-top: $tree-checkbox-margin-top - 1;
  }

  .#{$prefix}tree-checkbox-checked {
    background-position: 0 (0 - $form-checkbox-size);
  }

  .#{$prefix}tree-drop-ok-append .#{$prefix}dd-drop-icon {
    background-image: theme-background-image($theme-name, 'tree/drop-append.gif');
  }

  .#{$prefix}tree-drop-ok-above .#{$prefix}dd-drop-icon {
    background-image: theme-background-image($theme-name, 'tree/drop-above.gif');
  }

  .#{$prefix}tree-drop-ok-below .#{$prefix}dd-drop-icon {
    background-image: theme-background-image($theme-name, 'tree/drop-below.gif');
  }

  .#{$prefix}tree-drop-ok-between .#{$prefix}dd-drop-icon {
    background-image: theme-background-image($theme-name, 'tree/drop-between.gif');
  }

  .#{$prefix}grid-tree-loading .#{$prefix}tree-icon {
    background-image: theme-background-image($theme-name, 'tree/loading.gif');
  }

  .#{$prefix}tree-ddindicator {
    height: 1px;
    border-width: 1px 0px 0px;
    border-style: dotted;
    border-color: green;
  }

  .#{$prefix}grid-tree-loading span {
    font-style: italic;
    color: #444444;
  }

  .#{$prefix}tree-animator-wrap {
    overflow: hidden;
  }
}